tibility, if the variability of hybrids in general is taken into consideration, and 
moreover, that it may be the result of a cross effected in its native country at 
the third or fourth generation. We may surmise, for instance, that O. x dellense 
is the product of across of O. x excellens with O. triumphans, and O. x Troyanofs- 
kyanum the result of the fecundation of the same O. x excellens by O. Pescatorei, 
or by O. x eugenes, etc. It is hardly necessary to insist upon the endless hypotheses 
which present themselves in such cases. 
We have just mentioned O. x eugenes. It indeed bears remarkable analogy 
to O. x Troyanofskyanum; it is also allied to O. X excellens, and is generally 
considered as having the same parents; REICHENBACH in 1888 gave it the name 
of O. X excellens var. eugenes. 
O. x Troyanofskyanum in fact belongs to the same group. It made its appea- 
rance at the HorticuLTurE INTERNATIONALE, amongst a series of importations, 
which in the space of one year have produced so many marvellous novelties, 
O. crispum augustum, O. crispum meleagris, O. X rubiginosum, O. x spectabile, etc. 
We have dedicated it to the well known Muscovite amateur D' Troyanorsky, 
to whom Russian Orchidology owes many important improvements. 
By) be, 
2.0. 
eV 
